Chris Murphy wrote: > On Sun, Jul 5, 2015 at 4:43 PM, Timothy Murphy > <gayleard at eircom.net> wrote: >> Gordon Messmer wrote: >> >>> On 07/03/2015 03:43 AM, Timothy Murphy wrote: >>>> I've tried this again, and it does not seem to work. >>>> Have you actually tried it? >> >>> I don't have a CentOS system here that I can reboot readily. And it >>> occurs to me that if I did, I didn't ask if your system boots via BIOS >>> or UEFI. >> >> Thanks for your response. >> It boots via BIOS, and in fact boots into CentOS-7/KDE on a USB stick >> (that is how I installed CentOS-7), and into Fedora-21/KDE on a stick. >> >> But it doesn't boot back into the CentOS-7 system that is normally >> running if I say "sudo grub2-install /dev/sdc" (the USB stick is sdc). >> It just comes up with the repeated "-", >> which I take to mean it has found the boot-loader on the USB stick, >> but has not found the kernel on /dev/sda6. I have to confess that on using another USB stick, re-formating it under Windows-7, creating partitions with fdisk, and running "sudo grub2-install /dev/sdc", the USB stick did boot my CentOS-7 machine into its usual system. I checked the first 4 x 512 bytes on the two sticks, and they did differ in the first 512 bytes, but I haven't analyzed the difference. -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin